analytics(app): update telemetry to Ethermint modules (#1106)

* analytics(evm): replace telemetry gauges with counters and add gasUsed counter

* analytics(feemarket): add telemetry gauges for base fee and block gas

* analytics(feemarket): add telemetry gauges for gas_used per gas_limit

* analytics(feemarket): remove refund telemetry

* analytics(app): update CHANGELOG

* remove unwanted change

* address PR comments

* update comment

x/feemarket/keeper/abci.go

@@ -6,6 +6,7 @@ import (
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tharsis/ethermint/x/feemarket/types"
 
+	"github.com/cosmos/cosmos-sdk/telemetry"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 )
 
@@ -20,6 +21,10 @@ func (k *Keeper) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
 
 	k.SetBaseFee(ctx, baseFee)
 
+	defer func() {
+		telemetry.SetGauge(float32(baseFee.Int64()), "feemarket", "base_fee")
+	}()
+
 	// Store current base fee in event
 	ctx.EventManager().EmitEvents(sdk.Events{
 		sdk.NewEvent(
@@ -42,6 +47,10 @@ func (k *Keeper) EndBlock(ctx sdk.Context, req abci.RequestEndBlock) {
 
 	k.SetBlockGasUsed(ctx, gasUsed)
 
+	defer func() {
+		telemetry.SetGauge(float32(gasUsed), "feemarket", "block_gas")
+	}()
+
 	ctx.EventManager().EmitEvent(sdk.NewEvent(
 		"block_gas",
 		sdk.NewAttribute("height", fmt.Sprintf("%d", ctx.BlockHeight())),